/Engine/Plugins/Runtime/MeshModelingToolset/Source/ModelingComponents/Public/Drawing/PolyEditPreviewMesh.h
"Static Type" is just a static mesh
void InitializeStaticType ( const [FDynamicMesh3](API\Runtime\GeometryCore\DynamicMesh\FDynamicMesh3) * SourceMesh, const [TArray](API\Runtime\Core\Containers\TArray)< int32 > & Triangles, const FTransform3d * MeshTransform )